Remote Panel and DataSocket

[nuaa]

In LabVIEW6.1,there is "Remote Panel"feature.And in http://digital.ni.com/demo.nsf/websearch/3DF73584759FF60986256ABD005BB446?OpenDocument&node=1381_US, there is a demonstration named "Weather Station".In LAN,I can control the VI from another host.But how can I control a VI from a host of different LAN or by Internet.For example ,can I bulid a remote panel which you can control from your own computer?
Thanks.

[Mads]

As long as you have network access (LAN, WAN etc.) and there is no firewall or other blocking the ports in use somewhere along the link then it does not matter from where and across what part of the network you are trying to communicate, the application you need to build will be the same.

[BrandonS]

LabVIEW ships with a web server that is used to host your own applications. In LabVIEW 6.1 you find the tools to help you embed your own VI in a web page. These tools are found under Tools >> Web Publishing Tool and Tools >> Options >> Web Server. Most corporate networks have a firewall that you will have to deal with. In order for everybody inside or outside the firewall to access your remote panel, you will have to open a port through the firewall. Also, anyone that wants to view a remote panel will have to have either the LabVIEW Run-Time engine or full developments system installed.

[nuaa]

There is a proxy software named "Sygate",but I don't know how to open the port.Can you explain to me in detail?Thanks!!